tu=["Alex",[11,22,{"k1":"v1","k2":["age","name"],"k3":(11,22,33)},44]]
print(len(tu))
'''

tu[1][2]["k2"].append("seven")
print(tu)

# error
# 'str' object has no attribute 'append'
tu[1][2]["k3"].append(44)
print(tu)
'''
tu[0].append("55")
print(tu)